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Revise the complete 4BI1 specification while keeping experimental skills in a dedicated practical hub.
Last updated: 2026-07-23
Syllabus-aligned Pearson Edexcel International GCSE Biology notes covering Paper 1 and Paper 2 content.
This hub owns Pearson Edexcel International GCSE theory notes and study plans for Biology 4BI1. Experimental-skills resources are kept in the paired practical hub.
Use the official syllabus linked near the top of this page. The notes are organised for Biology 4BI1 and should be checked against the syllabus issue used for your examination.
Use the paired practical hub linked near the top of this page. Keeping the two routes separate makes it clearer whether you need subject knowledge or experimental skills.